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"Looking at India through African Eyes" was family reunion, a resounding success and the culmination of my early travels to South Asia. I came away from India convinced that African people around the world were on the rise and that there is a revolution going on in the hearts, souls and minds of Black people everywhere.
Runoko Rashidi is an African-American historian madly in love with Africa. He is currently organizing educational tours to Vietnam/Cambodia for April 2005 and Brazil for November 2005. For further information contact Runoko at Runoko@yahoo.com. Visit Runoko's award winning Global African Presence Web Site at http://www.cwo.com/~lucumi/runoko.html
https://www.countercurrents.or....g/dalit-rashidi11010
We join the ‘Open Arms’ crew as they embark on the most dangerous migrant route in the world — and one of their deadliest missions to date.
An estimated 19,000 people have been reported dead or missing in the Mediterranean Sea since 2014 as they attempt the treacherous boat journey from Libya to Europe, fleeing war, persecution and poverty.
Since its foundation in 2015, Spanish NGO Open Arms has rescued over 60,000 refugees. But nothing prepared it for the events that unfolded on November 11, 2020.
Director: Jean-Marc Joseph
Editor: Guillem Comas
Music & Sound Editor: James Hall
Hungarian Translation: Attila Piróth
Brazilian Portuguese Translation: Mariana Braga
German Translation: Janina Gilch
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For the first time in 60 years, Cuba will not have a Castro at the helm.
89-year-old Raul Castro is relinquishing his position as head of the Communist Party.
He says he wants to pass the baton to a younger generation.
Raul and his late brother Fidel began their leadership of Cuba after the Communist Revolution in 1959.
As he now heads into retirement Raul leaves a country wracked by the economic effects of coronavirus and U.S. sanctions and with growing signs of dissent.
So will this bring political change?
And what about relations with the United States?
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In a recent interview, UN Chief Economist Elliott Harris spoke about a ground-breaking change to national accounting that, for the first time, includes valuing nature in addition to more conventional economic measures. The System of Environmental-Economic Accounting – Ecosystem Accounting offers major scope for informing and improving decisions on economies, climate action and the protection of biodiversity.
Learn more: https://seea.un.org/
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just 11.5 hours, using nothing more advanced than high school algebra, journey from Einstein’s earliest musings on the speed of light to his startling realization that time can tick at different rates to his revolutionary discovery of the world’s most famous formula, E = mc2.
This is a more in-depth and mathematical version of the WSU Master Class “Space, Time, and Einstein.” https://youtu.be/CKJuC5CUMgU
#WorldSciU
Watch the class in full or view in segments via the chapter links below.
Experience the associated free online course at World Science U: https://worldscienceu.com/cour....ses/special-relativi
0:00 - Introduction
01:43 - Scale
05:46 - Speed
18:19 - The Speed of Light
27:39 - Units
33:28 - The Mathematics of Speed
44:24 - Relativity of Simultaneity
54:25 - Pitfalls: Relativity of Simultaneity
1:03:32 - Calculating the Time Difference
1:18:42 - Time in Motion
1:28:48 - How Fast Does Time Slow?
1:46:32 - The Mathematics of Slow Time
1:57:11 - Time Dilation Examples
2:10:51 - Time Dilation: Experimental Evidence
2:19:58 - The Reality of Past, Present, and Future
2:34:01 - Time Dilation: Intuitive Explanation
2:37:57 - Motion's Effect On Space
2:55:11 - Motion's Effect On Space: Mathematical Form
3:00:47 - Length Contraction: Travel of Proxima Centauri
3:07:46 - Length Contraction: Disintegrating Muons
3:12:00 - Length Contraction: Distant Spaceflight
3:18:54 - Length Contraction: Horizontal Light Clock In Motion
3:27:17 - Coordinates For Space
3:36:37 - Coordinates For Space: Rotation of Coordinate Frames
3:48:36 - Coordinates For Space: Translation of Coordinate Frames
3:53:10 - Coordinates for Time
4:07:12 - Coordinates in Motion
4:26:08 - Clocks in Motion: Examples
4:35:02 - Clocks in Motion: Length Expansion From Asynchronous Clocks
4:38:42 - Clocks in Motion: Bicycle Wheels
4:45:01 - Clocks in Motion: Temporal Order
4:54:35 - Clocks in Motion: How Observers Say the Other's Clock Runs Slow?
5:08:50 - The Lorentz Transformation
5:16:52 - The Lorentz Transformation: Relating Time Coordinates
5:26:10 - The Lorentz Transformation: Generalizations
5:33:18 - The Lorentz Transformation: The Big Picture Summary
5:47:37 - Lorentz Transformation: Moving Light Clock
5:54:39 - Lorentz Transformation: Future Baseball
6:02:35 - Lorentz Transformation: Speed of Light in a Moving Frame
6:08:43 - Lorentz Transformation: Sprinter
6:10:44 - Combining Velocities
6:17:46 - Combining Velocities: 3-Dimensions
6:27:45 - Combining Velocities: Example in 1D
6:30:23 - Combining Velocities: Example in 3D
6:36:34 - Spacetime Diagrams
6:50:35 - Spacetime Diagrams: Two Observers in Relative Motion
7:01:16 - Spacetime Diagrams: Essential Features
7:11:42 - Spacetime Diagrams: Demonstrations
7:15:23 - Lorentz Transformation: As An Exotic Rotation
7:27:26 - Reality of Past, Present, and Future: Mathematical Details
7:39:00 - Invariants
7:43:55 - Invariants: Spacetime Distance
7:54:25 - Invariants: Examples
7:59:19 - Cause and Effect: A Spacetime Invariant
8:12:40 - Cause and Effect: Same Place, Same Time
8:22:37 - Intuition and Time Dilation: Mathematical Approach
8:29:46 - The Pole in the Barn Paradox
8:43:51 - The Pole in the Barn: Quantitative Details
9:04:43 - The Pole in the Barn: Spacetime Diagrams
9:08:25 - Pole in the Barn: Lock the Doors
9:20:50 - The Twin Paradox
9:29:28 - The Twin Paradox: Without Acceleration
9:46:34 - The Twin Paradox: Spacetime Diagrams
9:53:12 - Twin Paradox: The Twins Communicate
10:06:34 - The Relativistic Doppler Effect
10:19:00 - Twin Paradox: The Twins Communicate Quantitative
10:30:17 - Implications of Mass
10:40:06 - Force and Energy
11:00:12 - Force and Energy: Relativistic Work and Kinetic Energy
11:07:24 - E=MC2
11:26:28 - Course Recap
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